Lightning Fibre's Black Friday 2026 offer gives you 1Gbps or 2.5Gbps full fibre for £19 a month for the first six months on a 24-month contract, with free installation and up to £75 cashback on selected addresses. The offer is for homes in Lightning Fibre's East Sussex and Kent footprint, including areas around Hastings and Eastbourne, and orders need to be placed by 30 November 2026. SwitchSquid has done the maths on all four plans so you can see what you will really pay.
Lightning Fibre offer at a glance
Order by: 30 November 2026, with installation available up to 31 January 2027.
Contract: 24 months, with free installation.
Price rises: Lightning Fibre says it has no annual price rises.
Router: a WiFi 7 router comes with the 1Gbps and 2.5Gbps plans.
Cashback: up to £75 on 2.5Gbps and up to £50 on 1Gbps, on selected addresses. Whether you qualify depends on your address.
Where: East Sussex and Kent. Eligibility is checked by address.
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Lightning Fibre is a regional full fibre network, so it will not be available everywhere. If your address is covered, though, the introductory price is very low for the speed, and the contract has a flat price after the first six months.
Lightning Fibre prices compared
Plan | First 6 months | Then, per month | Total over 24 months | Cashback |
|---|---|---|---|---|
2.5Gbps full fibre | £19 | £39 | £816 | Up to £75 on selected addresses |
1Gbps full fibre | £19 | £32 | £690 | Up to £50 on selected addresses |
300Mbps full fibre | £25 a month throughout | £25 | £600 | None listed |
150Mbps full fibre | £22 a month throughout | £22 | £528 | None listed |
The totals above come from simple sums using the prices in the offer. On 2.5Gbps, six months at £19 is £114 and eighteen months at £39 is £702, so £816 in all. On 1Gbps, £114 plus eighteen months at £32 (£576) gives £690. The 300Mbps plan at £25 for 24 months comes to £600, and 150Mbps at £22 comes to £528. These totals do not include any cashback, which you would need to qualify for, and they assume the prices in the offer stay the same.
The interesting result is that the 1Gbps plan costs £90 more than the 300Mbps plan across the contract, or about £3.75 a month. That is a small price for more than three times the speed, and more than a speed boost, you also get the WiFi 7 router. The 2.5Gbps plan costs £126 more than 1Gbps, or £5.25 a month.
How the cashback works
Cashback is where the offer gets complicated, and it is worth reading carefully. Lightning Fibre offers up to £75 on 2.5Gbps and up to £50 on 1Gbps, but only on selected addresses. "Up to" means you may get less, and if your address is not selected you may get none. The amount is decided by your address, which is why we cannot promise a particular figure for you.
The offer terms exclude certain situations, including 12-month contracts, the 150 and 300Mbps speeds, existing customers and the social tariff. If any of these applies, plan on there being no cashback, and judge the deal on the monthly prices alone. The sensible approach is to treat any cashback as a bonus. Work out whether the plan is worth it without it. If so, anything extra makes it better.
Which Lightning Fibre plan is best?
150Mbps at £22: the cheapest way in. It suits one or two people who stream and browse, and it has no cashback, but the price stays at £22 for the whole contract.
300Mbps at £25: a good fit for most families, with room for several streams and video calls at once. At £600 over 24 months, it is the best value if you do not need gigabit speeds or cashback.
1Gbps at £19, then £32: the best value for people who want fast speeds. It costs £690 over the contract, includes a WiFi 7 router, and may carry up to £50 cashback if your address qualifies.
2.5Gbps at £19, then £39: aimed at heavy users, home offices with large files and tech enthusiasts. Few devices can use 2.5Gbps today, so make sure your equipment can take advantage before paying more. Wired connections and WiFi 7 devices benefit the most.
Lightning Fibre versus the big national providers
Lightning Fibre is what is known as an alternative network, or altnet. It builds its own full fibre network rather than renting lines from Openreach, and it only sells in the places it has built. For you, the practical difference is choice: in some streets in East Sussex and Kent, you can pick between an altnet and a national provider such as BT, and a local operator may be cheaper or simpler.
When you compare, put the three numbers side by side: the price in the first six months, the price afterwards and the total over the contract. National providers often advertise a low first-year price with a mid-contract rise each spring, or a reward card instead of cashback. Lightning Fibre's flat pricing after the introductory period makes the 24-month total easy to work out, as the table above shows. If your address can also get full fibre from another provider, spend five minutes checking its total cost over the same period.
Getting the best speed once you are connected
Gigabit and multi-gigabit broadband can feel disappointing if the rest of your setup holds it back. Use a wired Ethernet connection for a desktop, console or streaming box where you can, because cables do not lose speed through walls. Place the router somewhere central and off the floor, and keep it away from thick walls and large metal objects. If you have a large home, consider adding a mesh extender. Finally, check that your Ethernet cables are decent quality: very old cables can limit speeds to a fraction of what your plan delivers.
Is the 24-month contract a risk?
A 24-month contract is the standard length for this type of deal. Lightning Fibre says there are no annual price rises, which can be a real saving compared with providers that raise prices every April. But a longer contract is a bigger commitment. If you might move house within two years, check the terms for moving, and confirm that Lightning Fibre serves your new address. If you rent, make sure you have permission before installation.
Things to check before you order
Address check: eligibility and cashback are decided by your address. Enter it on the Lightning Fibre page first.
Order deadline: orders by 30 November 2026, with installation up to 31 January 2027.
Price after six months: the 1Gbps and 2.5Gbps plans rise from £19 to £32 and £39. Put that in your budget now.
Cashback conditions: read how and when it is paid before you rely on it.
Existing customers: the offer terms exclude them from the cashback.
Your devices: check that your devices can use the speed you pay for.
How to switch to Lightning Fibre
Use the address check on the Lightning Fibre page to confirm full fibre is available at your home.
Choose a plan and check the basket for the price and any cashback.
Book an installation date. Free installation is part of the offer on the 24-month contract.
Keep your old broadband until the new service is live, then give notice. Check your old contract for any exit fees.
Plug in the router when it arrives, and test the speed on a wired connection first.
Our verdict
If you live in Lightning Fibre's area, the 1Gbps plan at £19 for six months and £32 afterwards is the standout, giving gigabit speed for about £28.75 a month on average across 24 months. If you do not need that much, 300Mbps at £25 is a solid mid-range choice. The 2.5Gbps plan is for people who will make use of it. Whichever you choose, check your address first and treat the cashback as a bonus.
Details are correct as of 19 October 2026. Prices, availability and cashback can change, so please check the Lightning Fibre page before ordering.
Frequently asked questions
How much is Lightning Fibre in the Black Friday offer?
1Gbps and 2.5Gbps cost £19 a month for the first six months. After that, 1Gbps is £32 a month and 2.5Gbps is £39. The 300Mbps plan is £25 and the 150Mbps plan is £22 for the whole 24 months.
How much cashback can I get?
Up to £75 on 2.5Gbps and up to £50 on 1Gbps, on selected addresses. The amount depends on your address, so check before you order.
When do I need to order by?
The offer needs orders by 30 November 2026, with installation available up to 31 January 2027.
Is installation free?
Yes, free installation is part of the offer on the 24-month contract.
Does the price go up each year?
Lightning Fibre says there are no annual price rises. Check the terms on its page, and note that the 1Gbps and 2.5Gbps prices rise after the first six months.
Where does Lightning Fibre operate?
In East Sussex and Kent, including areas around Hastings and Eastbourne. Availability is checked by address.
Do I need 2.5Gbps?
Most homes do not. 1Gbps is more than enough for typical use, and 300Mbps is plenty for many families. Choose 2.5Gbps only if your devices and your usage can take advantage of it.
